Ok, I never plan on having another one... And this idea is for asking someone to be a bridesmaid, but this would be a great way of announcing you're pregnant. Little message could say how you're going to pop... Or something along those lines.
DIY programs with confetti packets
Personalized Wedding Koozies (Clipart 1562) Eat Drink and Be Married - Koozies - Custom Koozies - Wedding Favor Koozie - Beer Coozie
Funny Will You Be My Maid Of Honor by WonderWomanBoutique on Etsy, $7.00